CMS7 - Patch Management does not detect change in the PMIMPORT.CAB

So we must uncheck the option "download only if modified", to force the download the latest CAB & getting correctly updates.

It is a pretty curious because if we look at: http://www.solutionsam.com/imports/7_0/patch/microsoft/pmimport.cab
We see the XML file contains additionnal newest XML files, not in the current C:\Program Files\Altiris\Patch Management\Downloads\pmimport.cab
When manual ask for a download, the log result is:

Log File Name: C:\Program Files\Altiris\Notification Server\Logs\a.log
Priority: 2
Date: 7/21/2009 11:56:55 AM
Tick Count: 1805852250
Host Name: X1
Process: AtrsHost (8288)
Thread ID: 64
Module: AtrsHost.exe
Source: Altiris.PatchManagementCore.Tasks.Server.PMResourceImportTask.ExecuteTask
Description: ItemTask 'Microsoft Patch Management Import' - http://www.solutionsam.com/imports/7_0/patch/micro... has not changed since the last download. It will NOT be downloaded

So to workaround: uncheck & download same file each day, except once a month, or 2 :-(

1)
I have one customer reporting this bug, not yet from others, but most ours are still in version CMS 6 ;-)
Any body else getting this same problem ?

2)
We were also surprise the long time takes the Client to report vulnerabilities, when deploying new agents (with patch plugin), all the same we force the patch cycle...
50% of the clients was not reporting (online clients), and must wait for 2 days before all reporting correctly.
Any body else get same 50% immediat patch report result, waiting for others?